This paper examines two methods of multiple access for optical networks: code-division and wavelength division. Two approaches are given for analyzing code-division systems, and an overview of a proposal for a WDM network will be summarized. Since the maturity of the technologies necessary for such systems diier, the usefulness of a direct comparison between CDMA and WDM is limited; instead, th...

This paper outlines the operational concepts of recently proposed Interleaved Division Multiple Access (IDMA) scheme. Some interesting features of Interleaved Division Multiple Access (IDMA) over conventional Code Division Multiple Access (CDMA) are explained including its performance, simple receiver structure as well as spectral efficiency. The basic principle of IDMA is that interleaver is d...

This paper presents a single correlator RAKE receiver for direct sequence code division multiple access (DS-CDMA) systems. In conventional RAKE receivers, multiple correlators are used to despread the multipath signals and then to align and combine those signals in a later stage before making a bit decision. The simplified receiver structure presented here uses a single correlator and single co...

The use of optical fiber which offers large bandwidth in the telecommunication sector has shown a lot of developments in the last decade mainly in television cables and cell phone cables. But these are not fully efficient and to do this, the fiber should allow multiple access which means allowing various users to send and receive data in the fiber at the same time. There are three main schemes ...